* NEW: Update copyright years.
* NEW: Have a stripped-down version of gb_common_string_temp.h to provide
STRING_compare() without producing compilation problems.
* NEW: AvlTree is a new Collection-like class implementing a balanced
binary search tree. It does _not_ utilise hashing in order to maintain
an order of the literal key strings given by the user (For Each thus
traverses from smallest to greatest key).
* NEW: Carry in a stripped-down version of Bob Jenkins' lookup3 hash
algorithm from the Public Domain. It was a last-minute decision to not use
it in AvlTree to maintain the literal key order.
git-svn-id: svn://localhost/gambas/trunk@5812 867c0c6c-44f3-4631-809d-bfa615b0a4ec
